I was at the grocery store yesterday and they were doing a charity drive; I'm sure everyone has seen this where they ask if you'd like to donate at the checkout. This gave me an idea... what if Tesla added a block on their design page that allowed you to displace a certain number of miles driven with solar? This could be as an investment in Solar City Bonds OR as a donation to an organization like Grid Alternatives. Most of us live in a bit of a microcosm... even compared to other Tesla owners. If you're reading this then you probably have a pretty good idea how much solar it takes to off-set 12k/yr miles of driving. The average Tesla owner probably doesn't and John-Q-Public generally has no clue what a kWh is... I've asked. I suspect that most people would be surprised that ~$5k worth of solar buys a lifetime of driving.... Thoughts?