). Now I find myself worried about the long-term cost of fuel (Peak Oil, etc) and whether I want to invest in something I may not be able to afford to fly in the future. I'm also interested in an electric track bike so the fund may be depleted yet again
How likely is it that this thing will ever actually see the light of day? Building a workable "flying car" should be easy for any engineering team with enough money. But will there be enough customers to make it a viable business? It needs 50 meters by 30 meters to land and 200 meters by 30 meters to take off. And it looks like it's got one seat. The web site says, among other things, "create your own bridge" and shows the thing flying over a big-city bridge, but of course you actually have to fly airstrip to airstrip, making it impractical to simply take to the air when there's a crowded bridge or traffic jam. For safety reasons, you cannot take off and land on highways. Consider the driving distance and traffic from where you are to the nearest airstrip, and from where you want to go to its nearest airstrip, and I think you'd be better off with a conventional airplane and a taxi or limousine service. Yes, there are situations when this would be nice. But it's slower than a plane, and it's tiny, and most of the touted uses (jumping over traffic jams) won't actually work because of its takeoff and landing requirements.
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