29 C.F.R. § 785.40 When private automobile is used in travel away from home community.
Title 29 - Labor
If an employee is offered public transporation but requests permission to drive his car instead, the employer may count as hours worked either the time spent driving the car or the time he would have had to count as hours worked during working hours if the employee had used the public conveyance.
Title 29: Labor
PART 785—HOURS WORKED
Subpart C—Application of Principles
Traveltime
§ 785.40 When private automobile is used in travel away from home community.