There's no way I'd let anyone borrow our van for a trip to Vermont! No way. For a 6+ hr drive over 4 states? Again, no way. It's crazy for someone to want to take your daily driver without offering another vehicle that's not a stick shift.
If you can afford expensive toys like pinball machines, then you can rent a van yourself.
However, the MIL thing I would have tried very very hard to not upset her and to have it work out with everyone happy, because she's very involved with your lives and you need each other. I can understand your frustration, but honestly, that type of thing happens with me and my mom all the time and we try to be nice to each other and forgiving when things don't quite go as planned. An apology goes a long way, even if you feel you weren't really wrong.
If you can afford expensive toys like pinball machines, then you can rent a van yourself.
However, the MIL thing I would have tried very very hard to not upset her and to have it work out with everyone happy, because she's very involved with your lives and you need each other. I can understand your frustration, but honestly, that type of thing happens with me and my mom all the time and we try to be nice to each other and forgiving when things don't quite go as planned. An apology goes a long way, even if you feel you weren't really wrong.