Not one more house or car could be fitted into the available space.
Some cars were also fitted with smaller door windows as well.
In 1903, car 13 was fitted with a covered top of short canopy type.
Both cars had been fitted with new uprights for this race.
The car could be fitted with a variety of coachwork.
During test sessions such as this, the car is fitted with 50 sensors that record between 200 and 300 pieces of data every second.
Unusually for the time, the car was fitted with air-conditioning.
Others then took over the training using a car fitted with armour plates.
All cars in each train are fitted with both current collector and motors.
The cars have three seats and are fitted with airbags.