Thats slower than i thougt, like an upright bike maybe? At that speed you should be able to let go of the steering in any velomobile.
As a large enough person in jeans and polo shirt I never managed to get the upright pedelec over about 68 km/h*, there is a kind of wall there. It didn't stop me from leaving many RR types behind in the dust on that particular hill - maybe 50-622 tyres, hydraulic brakes and no fear helped?
I went shopping this week and once again I hit the Bafang LCD 56.3 km/h limit. This time I was watching for it and noticed that I was still accelerating even though the LCD speed stayed the same. With my tyres that translates to 60.24 real km/h, the road is limited to 50 km/h and there is an intersection in a curve. The lady in the Renault Clio that pulled out from that intersection in front of me accelerated sufficiently so that I di not have to brake. So maybe 65-70 km/h? Without a bike computer or GPS we will never know...
I didn't try taking my hands off the tiller (being in a curve) but once again I marvelled at the excellent road handling. With hydraulic brakes Agilo could be a 45 km/h L6e no sweat.
* I verified the KT LCD speed with a GPS, they were to within 0.1 km/h