Can you use a truck battery in a car?

Short answer: Yes - Maybe

Long answer: Yes, if that batter will fit in the car's battery tray, and has the posts or side terminals in the correct place. additionally you will want to ensure that it is a 12volt battery and not a 18 or 24 volt battery (depending on what you mean by truck). You will also want to look at both batteries and see if you can see the CCA # this is the Cold Cranking Amps, make sure that the "truck battery" is equal or exceeds the Car battery.