IIRC, the car did NOT come with a certified car warranty, merely a 30 day warranty, covering the vehicle for 30 DAYS for the included coverage, stated in the warranty inclusion/exclusion lists, nothing more or less. Days or miles whichever line is crossed first ends the coverage.
Two years doesn't come into play, it's not relevant, it's NOT the warranty offered and does not apply.
It may be a warranty offered on other cars, but NOT the OP's cousin's car.
Void, null, NOT, does NOT apply, etc. 'till the end of time. Not purchased, not bought, offered maybe, but not exercised by the buyer....