I live and work in Canada on a work permit (also recently applied for PR), and I hold a valid US visa (B1/B2). I've visited the US a few times, and never had any issues. In my previous visits however, I either flew in by myself, or drove with my Canadian partner.
I'd like to take a longer trip (3-5 weeks) to explore the outdoors more, but this time I'll be traveling solo, and I'd prefer to drive in with my own car, instead of flying.
I read somewhere (can't find the reference) that crossing the border overland is different/trickier than flying, especially for solo travelers, maybe because when flying one would normally have a return ticket.
Is there any basis for this claim? any particular gotchas and tips for crossing overland? Would the answer be any different if I were to drive a camper van, or an SUV with some kind fix bed in the back?