Michael Henderson "Mike" Spence (30 December 1936, Croydon, Surrey – 7 May 1968, Indianapolis, Indiana, USA) was a British racing driver from England. He participated in 37 Formula One World Championship Grands Prix, debuting on 8 September 1963. He achieved 1 podium, and scored a total of 27 championship points. He also participated in numerous non-Championship Formula One races, as well as sports car racing.
Following Jim Clark's death in early 1968, Colin Chapman invited Spence back to Lotus as part of their Indianapolis 500 race team. Spence was due to race the revolutionary Lotus 56 gas turbine car. During practice at the Indianapolis Motor Speedway on Tuesday, 7 May, Spence, driving the #60 Lotus 56 turbocar (later qualified and driven by Joe Leonard), ran a lap of 169.555 mph - fastest of the month so far. Later in the afternoon, Spence was asked by Chapman to take out turbocar #30 for a test run after driver Greg Weld had difficulty getting the car up to speed. Spence quickly got the car to a lap of 163 mph, but on his second lap he misjudged his entry to turn one and collided heavily with the concrete wall. The right-front wheel of the Lotus swiveled backwards into the cockpit and struck Spence on the helmet. Mike Spence died in the hospital later that evening at 9:45pm from massive head injuries. His fastest lap speed set earlier that day would remain unsurpassed for the next five practice days.
