I know you are probably looking more for a 1/10 sedan out of context, but have you looked at maybe something like the Losi 10T?
It is a 1/10 truggy that has onboard starting. It is setup very much like the EZ Start from Traxxas, only that the Losi setup uses a LiPo battery onboard and fires up with a push of a button on the transmitter. That way, you never have to touch the truck to start it! If I remember correctly, the kit includes a Spectrum Telemetry system with transmitter and all included.
Best thing about truggies are that they can run anywhere! Grass, dirt, rockpiles, dirt parking lots, pavement, etc. They do it all, whereas your sedans have a limited choice. Just a thought for you.