Well Chris....
It's a good choice !!!
But I'm afraid that to find a sitting French soldier who can drive the Latil M7B1 is a dream...
For plastic french soldier, you have the Pegasus and the Caesar boxes...
You can find the items here :
http://www.plasticsoldierreview.com/PeriodList.aspx?period=1
and for resin figures you can find some by Milicast :
http://www.milicast.com/shop/home.php?cat=154&sort=productcode&sort_direction=0&page=1
or by Retrokit-France :
http://www.retrokit-france.fr/figurines-2eme-guerre-mond-fran%C3%A7ais/
No driving soldiers, just some standing ....
You maybe can built some, using english or german little soldiers and gluing a French head with "béret" or "French Képi"...
you can find some white metal "french heads" by the "Lancier bleu" here :
http://www.lancierbleu.com/311-tetes-lancier-bleu and here :
http://www.lancierbleu.com/tetes-minairon/3962-minairon-gef-999-tetes-avec-casque-adrian.html
(9 items in the minirons box)
I think TQD Casting offers too some white metal french soldiers...
Send us some pictures of the Latil when it's finished, it's not a so common truck, even by us...
Good luck for your little french soldiers.
Pascal