It's happened to everyone at some point...one of the cars ahead of you skids to a stop sideways, puts on its blinkers, and the passengers stumble out into the street, kind of writhing around as if drunk. Then under the glow of the streetlight you see their flesh starting to ripple and expand, and you know exactly what's happening...another one of those transformations. Traffic is already gonna be backed up with their car blocking the road, but now you can be sure there are gonna be a lot of looky-loos slowing things down too.
They strip off whatever clothes haven't already been destroyed, and the woman gets down on her hands and knees, inviting the guy to mount her with all the subtlety of a freight train. Both of them are looking really grey...just as you're speculating rhino or hippo, a long trunk bursts from their faces, and their ears unfurl like kites. And...well, then the two elephants start going at it. There's a route around them, but that doesn't stop most people from honking and swearing at them as they drive past. Whether they're trumpeting back as a response, or just due to being lost in ecstasy, you can't tell. You keep the pair in your rear view for a while, wondering what it must be like...wondering if it'll ever happen to you too.