The definition in my neighborhood is as follows:
A Kamikaze Demolition Derby is what you inadvertently end up being part of when driving in Hounslow or Feltham in West London. This is in part due to the high concentration in the population of chavs who drive around, high on whatever, in illegal cars. The can be spotted by the black or white smoke coming out of the back of the car, the colour red of the car, a head with a baseball cap in the driver's seat and acne on the very pale face, and if you get too close, will be cut up and then blamed for driving badly cuz you are a woman. You then see them drive off with squealing tyres smoking (they seem to love smoke of all kinds) and then nearly crash into the back of a bus.