I didn't feel better, and shortly I was violently sick in the parking lot. I still didn't feel better after two more of those, and then it went into the constant dry heaves. By this time I was so dizzy and sick that any motion, or opening the eyes, or even thinking about anything made me sicker. For an unknown time I was hanging out the door of my car unable to sit back inside or stop dry heaving or open my eyes.
Eventually a Good Samaritan called 911 and stood by watching over me until they got there. I was hauled off to Tustin Hospital in an ambulance. At the ER they rehydrated me and gave me some Phenergan, and eventually I got well enough that I could go home. Many thanks to realitylost for rescuing my car.
No idea what happened really. I've had two similar episodes in the past that were much less severe but had the same vertigo/nausea combination.