Two people walk to a car, get in, Fasten seat belts, drive about 3 blocks, park, unfasten seat belts, get out, walk the rest of the way. OR walk directly about 3 blocks, without delay. Which is faster? It probably works out about the same. There is certainly not enough difference to justify coming after someone with a knife and a gun.
On the other hand a lawsuit over something so trivial could have been avoided by just getting into the vehicle as his employer requested.