The Khyam instant-up tents are great for bike/car camping. I am referring to the ones with the pre-threaded fibreglass poles and latch system.
I found that riding a fared bike in the rain, you stayed dry as long as you were moving. It was when you were at camp and trying to set up the tent that you got wet. The instant erect tent allowed you to get under cover reasonably quickly. (39seconds is my record so far. That is from bag in hand, to pitched enough to get in.)
They are also pretty robust and double skinned. Mine has been very waterproof in some pretty intense (in-tents) rain.
The ground sheets on these tents are just thin flysheet nylon, so I usually use a builders tarp as a ground protector.
Thanks, bit more than I'd wanted to spend. Likelihood is it won't be used very often, if at all!