Any true HV controllers out yet, belted tires?

[lipomax]

Just as the subject says: any truly HV setups out there? I wanna run about 50 volts. Heck, if I had enough lipos, I wanna run 100 volts in an emaxx. I'd be the first person to buy a Mamba HV Maxx if they ever make one - I thought they were gonna make a special edition one for speed freaks with like 50 volt max and double the transisters for crazy amps too.

Also, who makes belted tires for RC cars? Or at least conversion kits so my maxx can run 1/8 tires (less ballooning).