Hi, The Mojo was developed before the Riot, the Riot then inherited a lot of the Mojo chassis design with some updates. There have been various iterations of the Mojo, which I have documented on this page on my website:
http://www.mymojo.co.uk/history.htmBryan Hartshorne used a Mojo for hillclimbs & sprints for a while but I think he has 'retired' now. There have been a few Riots used for racing/hillclimbs etc, and there are now one or 2 J15s (again based on similar chassis and suspension design) cropping up at sprints etc.
I've used mine on trackdays, it is great fun... I'll be at Cadwell Park on April 13th if you are anywhere nearby...
I am a big Mojo fan, I built mine back in 2004 and have covered over 40k miles in it since then. They are a fairly rare breed, a few have come up for sale but there aren't many about. Alternatively they are still available to buy as a new kit via Typhoon Sports Cars.
If you have any other questions please ask away... or have a dig through the rest of my website which has plenty of info.
Cheers!
Neil