The road between the airport and downtown.
North Harbor Drive, as it heads towards downtown, is a useful illustration of what the 'boulevard option' for Seattle's Alaska Way Viaduct could look like. I'm hesitant to support it because I'm afraid we'll get the stripped down engineering solution implemented in San Diego.
3 lanes each way, and a one-way access road with parking on both sides.
Imagine if you sailed your boat into San Diego after traveling from, say, Portland. You've stopped in so many nice little port towns along the way, but you're looking forward to another real city. You skipped LA entirely because it just didn't seem worth going in to port. You anchor your boat in San Diego's bay, and take your dinghy in to the dock. You walk up the steps from the dock and are confronted by more than a hundred feet of concrete. You look around and there isn't a store in sight. Great, you've got a long walk ahead of you. Should have kept heading for Tijuana.
Maybe you've been to San Diego before and know what to expect. You and your loved one bring bikes on your boat, and use them to do some sight seeing. At night you lock them up at the fitness path instead of hauling them back on your dinghy. The next morning you come back to find that they've been turned into avant garde art. Nice.