Yes, provided you are the legitimate owner of the vehicle and the husband has no claim of ownership. If the husband is the registered owner, however, then he has claim of ownership, and can't steal something which belongs to him.
Steal Wool - 1957 was released on: USA: 8 June 1957
Steal Kill Destroy - 2014 was released on: USA: 2014
A License to Steal - 2005 SUSPENDED was released on: USA: 2005 (limited)
Win Place or Steal - 1975 was released on: USA: February 1975
No, they do not.
to steal the baby and kill the sister and her husband
Thou Shalt Not Steal - 1911 I was released on: USA: 10 October 1911
Thou Shalt Not Steal - 1913 I was released on: USA: 13 March 1913
How to Steal an Airplane - 1971 TV was released on: USA: 10 December 1971
The Takedown - 2005 Dressed to Steal - 1.7 was released on: USA: 2005
The husband would have broken the law by forging the wife's signature and taking the money. The wife may sue the husband.