Border

I find that iOverlander's website with map offers boondocking and free RV friendly parking data updated by overlanders hourly/daily. But use caution: I only put stock in reviews for overnight spots that were posted less than 1 to 2 months previous to my departure. Anything older, and the situation may have changed. I checked all our local iOverlander boondocking/camping locals within about 20 miles of us (about 14 locales), and they all appear to be valid and correct as of today.

I found a list of what seems to be most of the RV shipping to the US from Quebec (quite a few also offer flight service from Montreal / St Hubert Airport to towns right across the border from Quebec), where you can retrieve your RV to travel further south in the US, or, all the way to Mexico. A few of the largest companies (like KMC Laval Inc) appear to be booked already, and are showing openings only in mid November. This was put together by Mario Lefebvre on September 9th:

Snowbird Transportation companies in Quebec:

AIM Sorel 514-654-3397
Auto Transit St-Eustache 450-974-7900
BMA St-Eustache 450-473-4325 / 877-800-4445
Bob Québec 418-651-6600 (RV shipping to USA)
Boisvert Drummond 819-801-1067 and 514-400-9489
Champion AutoSport Montreal 514-334-1414 (and moto)
Denis Corbeil Mirabel 450-258-0772 (roulottes)
Duo-Caroma St-Jérôme 514-979-0035 ou 514-825-3546 (all types RVs)
Élégance Montreal-Québec 514-645-8840 Florida 954-289-7602
Entreprise Clément Lavoie - Coaticook, Quebec 819-849-6374
Fly and Ride Drummond 819-818-1564 (and moto)
Gamino Blainville (514) 265-4784 (and animals and packages)
Hollywood (Mtl+Qc) 514-617-5490 / 819-951-0208
KMC Laval 514-267-4865 (RVsand boats and air services to US)
Laberge - Transports from: Montreal and Lévis and Mt St-Grégoire and Saguenay, Quebec 800-360-4336
Larouche Québec 418-622-0607
MA (Martine Allard) Montréal 514-236-5299
MF Cote St-Eustache 514-231-7044
Service North/South RV 514-591-0368 (RV transport to USA)
St-Hyacinthe RV Florida 450-774-3133 (RV and boat and auto and Air Service)
Snowbirds Québec 581-745-7928 (RV shipping and Air service to US)
Tracy 450-784-2202 (moto)
VR -Gatineau 819-617-0606
W Cyr -St-Jérôme 450-432-2277 (moto)