I paid for an extra maintenance package, so I believe I'll only have to pay for tires and paint for the next several years. The 14 gallon tank gives more than 5

I paid for an extra maintenance package, so I believe I'll only have to pay for tires and paint for the next several years. The 14 gallon tank gives more than 500 miles of range, so I fill up about twice a month - about $1000-$1200 a year. I'm very interested in adding batteries to my Camry Hybrid in the long run, to increase its battery range, and hopefully add plug-in functionality. The biggest question is where to put the batteries. In the 2018 model, they added one underneath the rear seat.