Many of you know the subject as a very interesting book published in 1931. I was scanning Abebooks and came across this very interesting, but pricey copy (personal volume of Max Epstein):

https://www.abebooks.com/servlet/BookDetailsPL?bi=22693463031&searchurl=sortby%3D17%26tn%3Dtank%2Bcar%2Bjourneys&cm_sp=snippet-_-srp1-_-title21

If someone is interested in just a regular copy, another dealer is offering one for $60.

Jack Wyatt