Lady Gaga's engagement ring could stop traffic ... who is engaged to tech investor Michael Polansky, can be seen driving around with host Zane Lowe while giving the camera a closeup of the ...

After driving the superstar around to the tune of ... earning shocked laughter from Gaga. “My little Lady Gaga. My little darling.” “Oh, my God," Gaga said as Lowe got in the backseat.