Here are some pictures of Gurney's car at Irvine with the bubble in the top like his racer. I think it's his son driving it.
The couple I bought my 89 911 from lived in Irvine and were good friends with the Gurneys. When I went to pick up the car they had pictures of "Dan" in it, they said he had driven it a few times. They also talked about having breakfast with him and his wife on his birthday, someplace in Irvine, maybe Crystal Cove. They purposely sat Dan facing the parking lot looking out the window. This car pulled into the lot and he got excited, look, same color as my racer and even has a bubble over the drivers head. The car parked and the driver was some big wheel from Ford that Dan knew. He walked in and walked up to the group, handed Dan the keys and said Happy Birthday. His wife had bought it for his birthday and arranged to have the bubble put in the top.
I wasn't there so can't verify the story but that what I remember