Incredible as it may now seem, seat belts were not made mandatory in F1 until 1972 (JS began his F1 career in 1965). Drivers (so the saying goes) preferred to be thrown clear in the event of a crash. Mind you, they may not have so silly as that sounds. The incidence of fire in F1 cars following a collision was horrendously high. Fuel tanks were no better than in a family car (the fuel "cells" used today are made of Kevlar). Fuel was sloshed about in the pits in jerry cans and open churns. Pit fires were commonplace. Proper medical facilities were rare at F1 meetings. After JS had his crash in Spa he was rescued by fellow drivers and was taken back to the pits on the back of a pick up truck, where he had to wait until an ambulance was called. This took him to the track's first aid post where he had to wait for another ambulance to take him to Liege hospital. The ambulance driver got lost on the way to the hospital. Happy days!