I'm not really for sure but I believe the car that won at Oakland was the Sta-Lube Spl. a full size champ/indy car (though it never ran at Indy) but this one appears to be a big (sprint) car.
In order to keep the boys from getting too fresh, father gave Mildred the tool necessary for such occasions.
Actor Eddie Albert seen at the northeast corner of Cahuenga and Lankershim Blvds. as he bicycles to work at Universal studios, Universal City, CA, ca. 1947. At the time he was working on "Smash-Up, the Story of a Woman"; note his shirt in the basket.