Tesla semi

[Redneck in training]

The military isn稚 just to protect oil, how much provable budget is used to protect foreign oil?

You have two numbers. With the military and without. Pick one.

 

[Redneck in training]

How many powertrains have you replaced. Are the seats torn yet, or has the seat back broke off altogether. You get tired of the stupid touch screen for everything idea, bad ergonomics while driving. A battery and electric motor with an iPad in it is not any thing advanced. Now look at a real technology packed car, built by real car engineers.

BMW Hydrogen 7 - Wikipedia

Hydrogen has two problems.
1.)There are basically two ways producing it. Electrolyze water. That takes a lot of energy. Or coking hydrocarbons. It takes energy too and is potentially polluting process. Both technologies are commonly used and mature.
2.) Energy density in storage. That is a bigger problem. The energy density per volume is lower than batteries. And filling the "tank" can takes as long as quick battery charge.

 

[houstonscott]

Not me I am neither rich or famous, like the "select lessee's" those cars were sold to, not sure why anyone would want a sedan that got less than 5 miles to the gallon anyways, no wonder they stopped after only 3 years.

Why would Tesla sell cars at a loss.

 

[tungularafishcamp]

Why would Tesla sell cars at a loss.

Sorry HS, I'm not tracking your comment??? I was replying to your link about the hydrogen BMW's and commenting their lack of fuel economy, I don't understand your reply about tesla selling cars at a loss?

 

[houstonscott]

Sorry HS, I'm not tracking your comment??? I was replying to your link about the hydrogen BMW's and commenting their lack of fuel economy, I don't understand your reply about tesla selling cars at a loss?

Connect the dots.

 

[tomato coupe]

A battery and electric motor with an iPad in it is not any thing advanced. Now look at a real technology packed car, built by real car engineers.

BMW Hydrogen 7 - Wikipedia

BMW took an existing car with an internal combustion engine, and adapted it so it could also burn hydrogen. The efficiency is awful, the range isn't good, the fuel isn't readily available, the liquid hydrogen vents off in about a week if you don't drive it, and it's even more expensive than a fully-optioned Tesla Model S. What am I missing here? What makes the BMW so great?

 

[houstonscott]

BMW took an existing car with an internal combustion engine, and adapted it so it could also burn hydrogen. The efficiency is awful, the range isn't good, the fuel isn't readily available, the liquid hydrogen vents off in about a week if you don't drive it, and it's even more expensive than a fully-optioned Tesla Model S. What am I missing here? What makes the BMW so great?

You are connecting the dots.

 

[tomato coupe]

You are connecting the dots.

There's nothing more useful than cryptic answers to questions about vague statements ...

 

[crazyal]

The port of Long Beach is one of the major gateways for imports into the U.S. There are hundreds of diesel trucks there at any one time, engines idling (and polluting), waiting to get a container loaded onto its trailer from one of those gigantic container ships. From there the load takes a 50-60 mile trip to the hundreds of warehouses in the Inland Empire (San Bernardino, Riverside, Ontario, etc) for distribution. Here is an ideal situation for something like the Tesla Semi. The Long Beach port authority has to limit the amount of truck idling because of air pollution from the diesels. Electric semis will make a big difference.

I think they are too late. Toyota has it's hydrogen powered Kenworths in service at both long beach and LA ports.

 

[crazyal]

Hydrogen has two problems.
1.)There are basically two ways producing it. Electrolyze water. That takes a lot of energy. Or coking hydrocarbons. It takes energy too and is potentially polluting process. Both technologies are commonly used and mature.
2.) Energy density in storage. That is a bigger problem. The energy density per volume is lower than batteries. And filling the "tank" can takes as long as quick battery charge.

Those are the same arguments against EV's. Solar panels at the source of the water can split it to get the hydrogen (clean method) just like solar panels can charge batteries. Or natural gas an be split to get the hydrogen releasing the CO2 (or possibly sequestering it) or can be burnt in a power plant to make electricity. Hydrogen can be pumped and trucked (using Toyota's hydrogen powered Kenworth with the hydrogen produced at the facility). It can even be transported by ship. Electricity needs expensive high tension lines to go any real distance. Our grid is close to being maxed out so adding large volumes to it of people charging their cars at night could be an issue.

Potential break thoughs for batteries is quicker charging batteries while for hydrogen it's using ammonia (since it's safer). Each has it's pros and cons.