[speedworxs]

i noticed this a while ago, but no one is willing to drop convenience for mileage
ex. power windows / manual windows

cars have so much safety equipment, and compared to years earlier that is where much of the mass comes from.
look at cars in the 80s, a Firefly/Sprint weighed on a scale 1800lbs where the Aveo is quite portly - and the 80s car got over 50mpg