You really don't want to be in an enclosed space during totality. You should ideally be somewhere like an open field where you can see the shadow bands that appear to fly over the ground.

I witnessed the 1979 eclipse from The Dalles, WA, after an anxious drive over the Cascades through impenetrable fog. The experience was somewhat marred by the many light planes buzzing around -- we were near a small airport, something I suggest you avoid. I reflected afterwards that the unfortunate people in the planes had a worse experience though, not being able to appreciate the whole effect.