Having a 2nd day from hell after the blizzard yest...

Having a 2nd day from hell after the blizzard yesterday. Lost tire pressure twice between Logan and 93 Rest Area just below Concord. At the rest area I saw that the left front tire sidewall was sliced. Stopped at a Grappone dealer and asked service if they would swap out flat for my spare so I could get home to Littleton. They did, as a "do unto others" gesture (no charge), Thank you , so much