Engines have limited lifetime too, but I get your concern. Most people's experience with Li-ion batteries is portable electronics that are designed to last 5 ye

Engines have limited lifetime too, but I get your concern. Most people's experience with Li-ion batteries is portable electronics that are designed to last 5 years or so. EV batteries are designed (and their charge state managed) to last much longer. As a rule of thumb, the battery in a long range EV (NMC or NCA chemistry) will have 70% of its original range after 1200 full charge cycles (charging 0-100% 1200 times, or charging 25-75% 2400 times) So a car with 350mi range when new will have 245 mile range after about 400,000 miles. EVs with lithium-iron batteries (LFP chem) have shorter range (250 miles or so) but they can do about 3000 cycles or 700,000 miles before their range falls to 70%, or 175 miles. Still potentially useful, depending on how far you need to go. I would imagine most of the EVs on the road today will succumb to rust or collisions before their battery gives out.