Ken, if there are no visible leaks/drips then you should be ok until you can do a car-up check. It is probably the chassis cross member that has grounded.
I have had several groundings in my car. Our area seems to be a breeding ground for “traffic calming” devices and more pop up all the time. If I were to be cynical I would think the highways dept were in cahoots with tarmac producers and “speed kills” fanatics. I have changed some routes to avoid the damn things. Also developed techniques to climb ove4 them....at an angle/ one side on/ drive between the square ones/. Cars behind sometimes seem to get very close as I slow down to a crawl too.
I do have a dent in the sump from a large rock that fell off a lorry....LOUD bang but no leaks.
on the A40 near Brecon. Luckily it is a Rover V8 with steel sump.
