If the cars are suitable for 4 year olds and older – wont they be too tame for my older child?

Our Jeeps are far from ‘off the shelf’. We have completely customised them so that they many are now 24v and have computerised controllers inside that enable us to change such things as top speed, rate of acceleration, braking efficiency, maximum current (good for slopes and bumps) – all by pre-programming them with our laptop. We also have a dial under the bonnet so we can alter the speed by miniscule amounts – to suit the drivers ability level – meaning the younger drivers would go a bit slower than the older ones, so its exciting whatever the age! Our jeeps also are fitted with remote controls, so we are also able to stop a jeep from wherever we are standing – and also change the speed! Being able to be so precise with the speed is something no-one else offers – and makes such a difference to the parties.