I built up a trans am to like a thousand horsepower with the best tires and everything maxed out and it got zero traction and was worthless.. 400hp vettes were destroying me and that car left me too broke to buy anything else so I sold the piece of shit game and won't play the next one.
as far as being a phone, my iphone4 always seems to struggle for good reception..
as far as all the nerdy shit like jailrooting or whatever the hell kids do these days, I won't even bother.. it works great for me as-is.
To me the thought of having a ludicrous speed car and racing other bajillion horsepower lamborrari's with people so on edge would make me think twice about getting into stakes that high.. To drive something like that you have to have slicked back hair with a snake ring and large men on your payroll who hurt others when you pull the toothpick out of your mouth snap your fingers.