I'm considering getting a Clarity. I *think* I'm going to lease, as the technology is moving so quickly and I fear what the resale/trade-in values will be on this car after 5-7 (or more) years compared to non-PHEV cars. What are your thoughts on keeping this car for 5, 7, 10 years? Do we know how many years the batteries will be useful for? What are the typical costs associated with replacing the batteries? Thanks!