Either will make your car faster.
There are many ways of making a car faster, most of them are either expensive or labor intensive though. Some of these increase power, or you can do something to the transmission, lower the car, change it's shape, or remove weight.
You would apply force to the accelerator to make the car go faster.
make it less weight
The pedal in the car you push to go faster is the accelerator pedal.
To make a co2 car go faster, make the body streamlined. Keep the weight down and make sure that the axles are smooth.
The faster they make the car the more likely it is to win.
This shape of car reduces turbulence by stremlining the fluid. Therefore less resistance is offered by air and car moves faster with less expenditure of fuel
Faster, no. Smoother, yes.
In soviet russia you can
make it go faster
draw a pattern of a shape of the car and cut it .