One may apply racing stripes to their car to give other people the impression their car is a lot faster than it really is. People who apply such stripes to slow cars get stereotyped as having a car with go faster stripes, sadly for the vehicle owner it is not the case.
Yeah, I wouldn't put racing slicks on it if your gonna drive it in a yard, only if it will be on asphalt and it is gonna cost you alot more for racing slicks then regular go kart tires that you can buy at your local tractor supply.
Regular RC cars are generally electrically powered by batteries whereas petrol RC cars run on a fuel as they have a small engine. The other main difference between the two is performance. A petrol RC car will be able to go much faster than a standard electric RC car.