Playing as Client in the Advanced Vehicle Project reduces maximum speed to 30-40mph and doesn't exceed 3rd gear.
Expected Results:
Speed exceeds 40mph; Gears shift up beyond 3rd gear.
Actual Results:
Speed it capped at 40mph gear never exceeds 3rd gear.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-144539 in the post.