https://www.facebook.com/share/18rTUNx6BL/   Someone needs to go and check this out....    I have not driven a roadster since 2005, when I also got to drive a crossblade and a forfour!   Yes Mike, I remember the "One Tonne Challenge:... LOL    

I ordered mine from AliExpress.

It likely can’t do a a steering wheel calibration on a smart. If you have a link for where it’s available for $40 please post it and I’ll check it out. 

Would something like the delphiy150 work? It's cheap at like 40 bucks and might be worth a shot 

“if ignorance is bliss, why isn’t the world happier?” Mark Twain