Hello,
No one appears to have commented on weight distribution.
From the spy photo the engine appears to be behind front axle, sporty three wheelers need centre of gravity between front wheels, hence their engines being in front of axle.
The point at which disaster occurs can be put off by lengthening wheelbase and widening track (in line with recent reports from Millbrook) but what size car do you end up with?
I know F4 had this arrangement, but they were only 24bhp.....