Back when trains were slower they'd get on horses and chase them down, so they were pretty ambitious... [He's mulling on that for a moment before Molly's remark indicating them onwards distracts him, and he takes a few quick strides with his long legs to catch up to Molly a bit in his enthusiasm to get on the train.]

Oh, definitely, I want to see Wyver~ [Since that appears to be the next place in line here. After another distracted moment, though, Ren taps his chin.] Also, a car is kind of like...a wagon that's smaller and made of metal, but also powered by an engine so you don't have to attach horses to it. Engines can move the wheels way faster than even lots of horses.

[There's a joke about the horsepower measurement in here somewhere.]