Otherwise, however, it has been returned to street use. The engine currently in the car is a upgradedFiat 850 engine, with the necessary changes to fit it in, but otherwise, most of the car still has its original components. This example also has the very rare three piston Abarth front disc brakes fitted, which also date back toits racing heritage. One downside, however, is, as with many of these cars, some parts like the original bumperettes were lost after being removed to put the car on the track. The Double Bubble is a very fun car to drive. With its small displacement, I often floor the gas pedal on acceleration and enjoy the high revving performance that the race-bred car was built around. The handling is generally good, despite the primitive suspension with a transverse front leaf spring and rear trailing A arms. In modern traffic, however, you have to pay close attention to the cars around you as you are smaller than any of them and quite a bit lower, making driving the lightweight, fragile double bubble in traffic a little bit intimidating.