Yeah its a diff step of rc. You forgot to add trailering. I am sure I could spend my money much better.. but really.. when have I ever spen t my money wisely?
You can fit a Kart inside a civic or on top - or leave it at track storage.
You did buy a opus bike for a great price - road cycling is a great way to get fit and have some fun. Plus you can get places on it or the fixie.
are RC cars not a bitch to control as well since they get out of sight rather quickly and you are looking from above sometimes to steer corners? would be like playing a racing game with a semi birds eye view.