The caption refers to the vehicle as a ‘Jeep’ car.
“This is an original press photo. Down a 160 foot incline on the sand dunes at Cape Henry, a ‘jeep’ car from Fort Story makes the descent with ease during maneuvers training drivers to handle these vehicles over all types of terrain. Should American Soldiers see service in desert lands the training these men receive will be of great value.Photo measures 9 x 7.25inches. Photo is dated 4-22-1942.”
Impressive photo, I suspect uphill might be a different feat.