You used to ride so you obviously enjoy it, it sounds like your weight and not being able to ride from home are why you haven't been able to get started riding again.
Sometimes the hardest part about riding is
getting ready to go ride. Making the time, in your case, loading the bike in the car, getting all the gear on, etc.
Once you get over the hurdle of the first part, the actual riding will serve to make you ride the next time.
Bicycle riding reinforces bicycle riding.
I predict once you start, you will want to continue, so you will. You obviously enjoy it, you just have to get reacquainted with your bike and that
feeling of riding again.
The rest will take care of itself. Start easy and build up gradually.
Go Ride!
