When Robert Muldoon and Donald Gennaro went to investigate the Tyrannosaurus Rex breakout, they were horrified to discover the bloody stump of Ed Regis‘s leg. As Gennaro looked for a covering for the leg in the back of the gas powered jeep, he came upon a canvas bag in the back. Inside the Canvas bag were two tarps, a wheel rim, a tool kit, and a cardboard box. The canvas bag’s purpose was to store needed supplies should the jeep ever need maintenance at a distance from the garage, as evidenced by the tool kit and the wheel rim.
Jurassic Park by Michael Crichton page 222 (First Edition, Thirty Fourth printing)