i work for mercedes were ever car is limited to 155 mph and have driven at these speeds on a road test with customers with complaints ect ,i personaly think 110 is a good limit, but even that is dangerous if the car is not in good nick ,and this will soon be a problem when the govement change the mot test to every 2 years
.merc are developing a system to slow down cars in built up areas eg out side schools play grounds ect ,but with a split second override system to get you out of trouble if needed which should work hope fully
