get it vigorously checked for safety when it's built too, a friend of mine paid £23,000 for his westfield, had it on the road just over 30 minutes and it slid off in the wet at under 25mph, and this is how it looked afterwards from making contact with a tree, and this HAD been inspected by vosa prior to having a registration issued
http://www.manchestereveningnews.co.uk/news/s/1067181_lucky_kit_car_crash_escape
the story isnt completely accurate in relation to his injuries, and nor was the car just "broken in 2"
The car was broken in two by the impact
.. or cut in two by the fire brigade?
Oh, dear.

I do feel for your mate, and hope he has made a full recovery.

He isn't the first person to have come a cropper relatively early in his kit car driving career, unfortunately. TBH, though, and without having any knowledge of this particular case, I would say it's unlikely to have been a problem with the car.
There is a world of difference between driving a car like that in the dry, where they are difficult to unstick without behaving like a hooligan, and in the wet, where the amount of power versus the weight and traction available can make them very easy to lose indeed.
We all learn that lesson pretty early on. I'd be lying if I said I hadn't done the same. I suspect the only difference relates to the position of the tree relative to the car.

Kevin