They are parking lot smashers. Fun for the purpose they serve, but you are not going to be able to take it to the track and be competitive. I did take one of those, put foam tires on it, lowered it, played with the shocks and played on a track. But the key word here is played. You would be better off if you want an on the track car one like I have the Team Magic Le Mans. You can play with this car on the parking lot and then the track also. Not a street car, but good parking lot and as mentioned track. Plue you can upgrade. The price is almost double the Smartech however - $389.00. The other way is to look for a used car on the RC tech for sale and Ebay. Sometimes you can find something in your budget that will serve your need for speed now!
Good Luck
Sam