i know the guy who sells these cars, i have one myself.

they are some chinese brand but have been pretty reliable.
i have the brushed 540 version and the brushless version.
both have been pretty good. i use the brushed one for drifting and the bl for racing
i have only just started racing rc and these are the first cars i have bought.
my friends mostly have petrol cars and with the bl setup with a 11v lipo battery, i kill them every time