Our man in the U.K., Angus MacKenzie, got an advanced look at the electric Longbow Speedster and Roadster last November and came away mightily impressed. Thanks to its sub-ton (1,973-lb) weight, single 270-hp motor spinning the rear wheels, and a 55-kWh battery, the Longbow was claimed to hit 60 mph in just 3.5 seconds with 275 miles of range. Seemed sensible to us. Well, just a couple months later, co-founder Mark Tapscott was in Las Vegas at CES showing the same car off in an extreme-performan...