The car transporter has a red "dealer-plate" when at the gas station, but during the chase on the Autobahn (which was closed for filming), it can be seen with a normal plate.
During the Ferrari chase, a camera (or some towing-equipment) can be seen at the front of the Ferrari.
The "P4 Jaguar" race car is in fact a replica of the Jaguar XJ13, a unique prototype made by Jaguar in 1966.
The "Porsche 550 Spyder" is a replica made in the UK, based on a Skoda Rapid Convertible.