Reasonable but hard to comply with if you don't have an open truck or trailer. Garages are also confined spaces. I transport my oxyfuel set up in an SUV, not much choice, and in the winter it is isn't pleasant to leave windows cracked.
Seems easy to comply with to me. If you don't have a truck or trailer, don't transport it. Garages and other spaces where such things are expected to be stored or used are required by code to have certain minimum ventilation air changes per hour, although I am sure there are thousands out there that predate such codes.
xtn