Of course if you add an F1 car in there the racebike can get a huge maybe 20 second head start as well.
I once saw a graph of Suzuka when they both raced there showing the laptime difference it was insane how much faster an F! car is.
"Remember that an enduro tests the endurance of three things: your machine, your body, and your wits. Only one has to fail to keep you from reaching the finish line." Cycle World March 1966