Does an employer need to have a "special mission" present when an employee gives a colleague a ride home?

[176 Cal.App.3d 1038] It is possible for a special mission to be present when an employee gives a ride home to another employee. (See Harvey v. D. & L. Construction Co. (1967) 251 Cal.App.2d 48, 52-53, 59 Cal.Rptr. 255.) In that case, unlike the present case, however, the facts presented a reasonable inference not only that the employer had requested his employee to give a coworker a ride home, but that providing such transportation was a part of the employee's routine duties.