You are still treating the argument as the whole of Houston is evacuating. That's because the whole of Houston is flooding.
See Mapping the Devastation of Harvey In Houston
Many of the bayous, flood channels and rivers around the city were well above the top of the water bank as of 4 p.m. Central time on Monday. Red dots are overflowed. Orange are nearly overflowed.
Rising waters have closed major roads, frontage lanes and exits. Thousands of people have been rescued from flooded cars and homes, many of which were almost completely submerged. Purple dots are high water incidents.
Your arguments are not convincing. I'm not convincing you. Given the maps above, where would YOU start, and how long would it take?
-PJ
Seriously, there are FLOOD PLAIN MAPS of Houston.
Everytime it rains, they know EXACTLY where it is going to flood. They know it so well the media stations themselves there to take the dramatic pictures. Sunday morning, guess what, we know where the water is, we are right there.
When the NWS and Army Corp of Engineers says this will be CATASTROPHIC, NEVER SEEN BEFORE flooding, start there. Move those people out. If the flooding continues, move more people out.
Instead, they waited until houses were under water to start pulling elderly out of homes.
I would much rather move them out of homes on buses, little road trip, instead of carrying them through feces and chemical laden water.