Well, so far as I know, Traxxas first developed their Ez-Start, ?? years ago. It's an onboard starter, basically a 400 size motor that goes thru some gear reduction and turns the engine for you. It also heats it glow plug. The battery is hand-held, and the circuitry that cuts the amperage to the glow-plug (it's 7.2v to the motor) is built into the wand.
Someone took this and bypassed the switch in the wand and wired an ESC into where the battery hooked in and made it work on the 3rd channel.
Sportwerks released the Reaction, which is a 1:10 scale stadium truck that has a streamlined system, made to be remote start, but it's much like I described above.
Redcat's just releasing their Reactor, and while the name is similar, they had that contest here to pick the name. But I won't be the last to draw the connection.
Anyhow, Redcat's got a remote start on their new truck.
Losi's got the Ten-T, but while I haven't yet gotten their starter in my hands to look it over, it appears that they're trying to lock you in. Gotta have their engine for their starter.
I hate that.
I home-brewed mine based on a Traxxas EZ-Start for the .15 engine (EZ-I) and then taking an ESC, I power the motor and the glow plug with the ESC. The glow-plug voltage/amperage is dropped via a ballast resistor (used in older 1:1 cars for the coil) and I use a 6-cell 7.2NiCd to power it.
But the thing is, I'd like to see a kit put together by someone, so that instead of having to buy and modify, we could just bolt it on, much like a Tiger Drive is now. or even the Roto-Start kits you can get from Redcat today.
I like hacking and modding, but sometimes, it's nice to just open the bag and bolt it in.