For starters, read this -
http://forums.dfwmiata.com/showthread.php?t=1493
Secondly, if you don't drive like an idiot in the rain you will be OK. Severe hydroplaning= idiot. Have you lived in DFW all your life? If you have, you know we don't get that much rain. If you haven't, we don't get that much rain.
Lastly, thank you and please drive thru.
PS
Just saw the part about 'flash floods'. Really? That's your concern? ::Fish::I've driven a Miata thru a flash flood with water splashing up over the hood. I think I was on Azenis at the time.