Defiants Flipped Out Fury Stunt Set £29.99 @ Smyths Toys Was £59.99
I've never seen this toy up close and personal so, alas, I can't vouch for whether it's half as much fun in real life as the kid in the picture makes it look, but it totally looks like the sort of thing my lads would love.
It seems it's a stunt set that you can use to perform crazy car tricks and jumps. It comes with a power spiral climb, a mega jump, a trampoline and a landing ramp, and one special edition 4x4 motorized vechicle with adjustable gears is included - apparently you can buy more of these separately which it looks as though you'd need to do to really get your money's worth out of this little set up. It also requires batteries (which you can buy here) and it's not suitable for children under 3 years of age.