Joan's unsuccessful trip to Connecticut: How is Amy going to get home?

There are varying accounts of how this happened but to the best of my knowledge, it began with this:

Joan: I would love to spend the week-end in Connecticut but isn't Syd's car held together mostly with duct-tape?

Joan (later): I would love to spend the week-end in Connecticut but the last time we drove there, the Titan's brakes went.

So it was arranged that Savannah and I would drive the Titan to Connecticut on the 4th of July to have Joan and Sydney follow us, several days later, in Savannah's safe, reliable car.

"It's time to go," Sydney shouted, pulling into Joan's driveway like a demon. Racing out of the house, Joan slid across the hood of Savannah's car before dropping down through the open window. Punching the dash, Joan yelled, "Hit it!" The pair peeled out and were soon two-wheelin' it on the 90 East exit. The speeding car passed a sign: Bridge Out Ahead. "Connecticut, here we come!" they bellowed as they hit the ramp. Joan whistled "Dixie" as they flew through the air, "Yee Ha!"

Joan:  That is NOT what happened.

Sydney:  We were traveling at the lawfully-posted speed limit when Savannah's car inexplicably began to run rough. We were afraid the engine was going to seize up so we pulled over. Joan employed all of her skills as an amateur mechanic but was unsuccessful in diagnosing the problem. We called Durwin and he said he'd bring us a screwdriver.

Savannah: Sydney broke my car.

Amy: Savannah, show some empathy. Your sister and Joan are abandoned on the side of a dangerous highway...frightened and alone.

Brad: Where are they?

Amy: Near Leroy.

Amy: Never-mind. They're near Victor.

Amy: Mile marker 338.

Brad: Please stop helping me.

Savannah: Sydney broke my car.

Amy: Savannah...stop thinking about yourself! Poor Joan and Sydney are, at this moment, exposed and afraid. Starving to death.

Sydney: Actually, Joan brought a Disalvo's pizza.

Amy: She brought a pizza but didn't bring a screwdriver?

Savannah: Mom...what were you saying about empathy?

Amy: We're stuck here in Connecticut and THEY have a Disalvo's pizza.

Brad:  Does ANYONE  know where they are?

Joan: I would have loved to have gone to Connecticut for the week-end but the Mosimans don't seem to own a vehicle that can actually make it there.

They're just some good ol' gals

Never meaning no harm

Beats all you never saw

All the people that they'd call 

when they were broke down in Farm...

Amy: Farmington! They're in Farmington!