So next week mil is receiving an award from Tupperware, the event is in another town 4 hrs away. Her car has some problem so she is unable to use it. Yesterday DH asked me if I could use my late Dad's car to work (as I use our car daily to drop my DS off at daycare and get to work) so his parents could use our car next week to the event. I was fuming (silently) and did not answer.
A few days prior, sil from the same town where the event is taking place messaged me telling me that she is having a little 2nd birthday party for her DD and would like us to come and bring her parents, she understands that fuel is expensive so she will deposit money to cover fuel costs. Now thing is, she only offered to pay for fuel because she wants her parents there and we are just the ride alongs.
DH has another sister here who could borrow them her vehicle. And knowing DH he would pay for their fuel to get there while he cries to me that he's forever broke 🙄
What do I do or say without making seem like I don't want them using our car (also if they go, they stay a few days at sil place so they will be using the car for a few days) and without it turning into a fight.