Not the Batmobile (Secret Origins of Batman Part 6)
Over at the excellent Dial B for Blog, Robby Reed recently posted several comparisons of Bob Kane's artwork with Henry Vallely's. While I feel that some of the connections he makes are too different to be fairly labeled as swipes, he does make clear that Kane's drawings were undoubtedly inspired by those of Henry Vallely. One example provided by Reed is of Commissioner Gordon's car from 1939's Detective Comics #27 as compared with a getaway car found on page 365 of 1938's Gang Busters In Action (BLB 1451). The more accurate comparison is found on page 141, which, as displayed above, can legitimately be called a swipe.