I'd never heard of a 'Barbie Jeep' until today.
It's apparently an electrically-powered toy vehicle that's intended to be driven around the house (or perhaps the garden) by little girls. It's part of a whole range of similar toys.
It seems boys will be boys when it comes to toys like that . . . even big boys. It seems that Morris Mountain held a race for these things last year. An offroad race. Downhill. With adult drivers.
Watch it in full-screen mode to make the most of the mayhem.