Jason, Good story. And it must be a good truck if it was used by a plumber (noticed that pipe rack, too.)
Sorry to hear that your dad's Escalade will likely be totaled. Sounds like some serious (expensive) damage.
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.
And it must be a good truck if it was used by a plumber (noticed that pipe rack, too.) 
Sounds like some serious (expensive) damage.