No sorry MacGreggor don't make Tutorial!
except here this little one! ;)
https://moiscript.weebly.com/les-voitures-de-macgreggor.html
You can use the Google translate by address site page for any language!

You can find tutorials of car here click "original" ;)
https://moiscript.weebly.com/le-tuto-de-mauro.html
https://moiscript.weebly.com/fiat-abarth.html
https://moiscript.weebly.com/le-truck-de-ed.html
https://moiscript.weebly.com/la-voiture-de-ed.html
https://moiscript.weebly.com/la-vespa-de-mauro.html
https://moiscript.weebly.com/la-voiture-de-zarkow.html

Have fun car modeling! :)
Ps For old eyes some youtube videos by Zarkow has "general" text Captions!