2 tons, what are you driving a compact? Lol the prox things scare me, my dad has them and they are messed up atleast every 6 months, had it at the dealer 4 times, even the dealer does not fix them, they send it to a shop that just does them or they come to the shop. the parrell parking aids are even worse. don't get me wrong, i don't like electronincs, but over all they have made cars "better" a whole lot harder to work on and cost a lot more, but the only reason new cars get the milage they do, is computers. they are safer too, even though they are lighter and not near as strong. My last 1 ton was almost 1000 lbs lighter then the 1 ton i had before it.