Journey Into Mystery #89

A gangster wounded in an escape has his men kidnap Dr. Blake to operate on his gunshot wound. Blake transforms himself into Thor and brings the gang to justice, as well as rescuing Jane.

A crooked mechanic hires a drifter to customize a car, promising enough money for him to get home. When he refuses to pay the man the drifter takes the car instead, which he converted to be able to fly him home to the stars.

A time machine seems not to work, but actually travelled in a complete loop through time back to its point of origin.