Eventually I'd recomend maybe getting yourself some sort of wet bag for this purpose. ME sells some and so do lots of other cloth manufacturers (another popular brand is Bummis). You can get different sizes depending on your needs, some just enough to transport a couple diapers while out shopping to large ones big enough to fit inside a big diaper pail and hold 2-3 dozen diapers.

For now you can just use any old plastic bag or even bring your pail with you if it's a manageable size and you have room in the truck. Grocery bags, milk bags (if you live in the US you won't know what I mean, LOL!), bread bags, whatever as long as it's waterproof. You can tie the ends to help keep in the smell but unless you leave them for more than a couple of days the smell really shouldn't be bad at all. You can reopen the bag each time and put all the diapers together or even just put them in each their own individual bag and just open at wash time (individual bags may be good if you have a particularly messy poopy diaper).

I remember going on a road trip for 3 nights with my son still in diapers. Used cloth almost all the time and put them in my Bummis bag. We kept the bag closed as tightly as we could but they're only a drawstring so don't entirely seal (a plastic bag would actually seal better than this). Kept the bag in our hotel room and then in the car with us on the way back, never smelled a thing even with the lack of a complete seal.

Rinsing and drying will work but honestly I just don't think it's necessary. If I were leaving for a few days with a toddler I may rinse the nighttime diapers (toddler nighttime diapers can be pretty potent) just to be sure but I'd never bother with dayttime ones and I'd never bother drying them out.

Throwing them in with regular laundry is also fine, but honestly I just wouldn't worry about it. Just throw them in the pail or a bag and then wash when you get there.

Karen.