I got to move a XJS once. The place where I was working at the had limited onsite parking and all keys were left in the cars so if anyone needed their car to go home etc. then we just moved one or two out of the way. Bosses/owners were always last to arrive so all the up market cars were last in. Couldn't hear the motor on start up and no sound like you'd get from a Holden etc. to tell if it went into Reverse (auto) when I moved the shifter out of Park and then into Drive....... scary