The origins of NASCAR racing go back to the prohibition era when moonshine runners would upgrade their vehicles in order to outrun authorities while leaving the vehicles looking ordinary so as not to attract attention.
F1 driver Kimi “Iceman” Räikkönen once had his car break down during the Monaco Grand Prix. After this, live TV showed him walking along the sidewalks with helmet still on, straight to the harbour, where he climbed aboard his yacht.
Nissan used the number 23 in racing because the number 2 translates to ni. And, the number 3 translates to san. 23 translates to ni-san.
Porsche puts the ignition on the left of the steering wheel because Le Mans racing drivers used to make running starts, this way they can shift and start the engine simultaneously.