and another one....
I think they are both from 1972 also if so, the #42 is Swede Savage (DNQ) and the blue one is probably the car of Wally Dallenbach that also DNQ -both drivers qualified more conventional cars.... There is a neat little write up about the car in "Design and Development of the Indycar" by Roger Huntington - out of print but awesome book if you can find an old copy....