I agree that this is a likely scenario - wasn't there a young woman who disappeared while biking and it turned out that some folks had been drinking and driving and hit her and disposed of the body- rachel someone??
We as a group hear alot of stories about folks who are kidnapped but I believe its more likely that Maura met with an accident of some sort - I'll also consider that in her altered state that she somehow perished on her own, falling in the woods or freezing.
Yeah, but if Maura had met with an accident of some sort, her scent just wouldn't have stopped in the middle of the road, as it had in this case. The search dogs lost her scent in the middle of the road. This is why they believe she got into a passing automobile.
If Maura had been hit by a car, you'd think her scent would be all over the road. Even if she landed on the hood, they would still have to drag her off and put her in their trunk or backseat (*SHUDDER*), which would leave more scent on the road, assuming they dragged her on the road and didn't carry her.
There would most definitely be blood or other signs of trauma there, especially in a fatal hit and run. Not to mention, there would be parts of the other car there. If you've ever hit a deer, you'll understand what I mean. Even a small deer makes a huge impact. I'm assuming an accident with a human wouldn't be much different than hitting a deer, in terms of damage, blood spatter, etc.
I don't think the hit and run theory works, logically. There's just way too much evidence that would be left behind from a violent fatal accident and no evidence indicating such an accident has been found.