I'd happily be in for another $500, it's still less than half the cost of the Polaris Slingshot and it doesn't even have a roof...albeit it does have 3x the power..but still, even if it's hiked up to $7300, show me a better deal in the auto industry.
$7300 plus the cost of a nice engine swap, Ford 1.0L EcoBoost
Now if you figure out how to cram a 2.0L Ecoboost in an Elio with 252 HP and 270 lb ft. of torque you would have one wild and crazy ride. I have seen those from Ford Motorsports available new on the internet for $5500 however this would likely also require a new tranny but it would be so worth it to blow the doors off a Slingshot!

			
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