What do you think the Roadside Assistance will be?
The obvious answer is that it's just like the Assist by Desjardins from TAR Canada where it's like an Express Pass, but you use it to make a challenge easier (like "Make 50 Dumplings" into "Make 25 Dumplings" or smth of the sort)
I don't think it'll be that simple though. They already have the Express Pass twist, so I don't think they would use it the same way TARCAN would use the Assist by Desjardins.
Maybe it could be something along the lines of "Force a team to stop their race and help you before they can continue?" That would make sense based on the name but I don't know if TAR would do something like that.