I think price is an important difference between phones and cars. When they started coming out smart phones were expensive, but within reach for a big slice of

I think price is an important difference between phones and cars. When they started coming out smart phones were expensive, but within reach for a big slice of people. There's a lot of people who don't buy brand new cars because they're expensive and poor value so I suspect there'll be a natural transition where the tech takes ~10years or so to trickle down in to the second hand market.