Some updates on the Young Indiana Jones Chronicles:

I think these are the same, just modified with different grilles and headlights:
http://www.imcdb.org/vehicle_184878.html
http://www.imcdb.org/vehicle_164090-Made-for-Movie.html

They can be regrouped here:
http://www.imcdb.org/vehicle_199907-Delage-1927.html

And this one has also been solved IMO:
http://www.imcdb.org/vehicle_164091.html