Getting rid of the 2nd car is definetely a good choice. car is a depreciating asset.
You might want to use the proceed to invest, for example building up a blue chip portfolio which pays decent dividend.
Also you might want to explore of saving up a certain sum of money to invest in property when it goes down.
Renting out your 2nd car is not a bad idea if the rental yield is more than its yearly depreciating value.