Strange Husband

Houston does not have a good mass transportation system. It is a very spread out city. There are buses and cabs, but I don't believe yet it has any light rail/train. Generally speaking people in Tx love their cars. I just moved from there after 20+ years. I lived in HOU for 6 years and then Austin and Dallas. Biking is not an option either unless downtown where there are sidewalks as expected. Not sure where he is going to work, but there are plenty of hotels and maybe he can stay at a hotel that is in walking distance to work. When I traveled to HOU as a prof'l I'd stay at the Westin Galleria which was great. My work was walking distance from it and being next to the Galleria gave me access to plenty of restaurant options and shopping (biggest mall in the city). One thing about Tx is people are usually very friendly and helpful so he should try to feel comfortable asking questions.

Every city has taxis and most have underground trains. I would google the word "public transport" and the city you are interested in. Most big hotels have little "courtesy vans" that will pick up people at the airport and take them to their hotel. Hint: even if you are not in THAT hotel but yours is close you could just get on that van, they do not watch you check in, they just drive around in circles between the airport and the hotel.
When my company has visitors from out of the country we always arrange "limousines". That does not necessarily mean those sleek fancy long cars, sometimes it is just a little van or regular car. But it means that the person is picked up at the airport and brought to their hotel - usually a hotel very nearby so they can walk across to our office building. Almost all suburbs have something called "elder care rides" or "senior transportation" which are little vans that pick up elderly people from their homes and take them to stores and doctor appointments. If he has to be in the suburbs where most Americans would rent a car to drive themselves around (and where there often is no bus or train) he could google "elder transportation" or "medical rides" and call a few to set up his transportation in advance. Finally, why not call the receptionist or secretary of the company he is going to visit and let them know that he does not have a license that allows him to drive in the US and ask for their advice for transportation during his visit. It is not unusual for people who are used to driving on the other side of the road to not want to drive in the US. I am from the Netherlands where people can go their whole life and never drive a car, so your husband is not strange at all. You could look at it the other way - he is a perfect conservationist who refuses to waste gasoline for his own personal comfort!

I'm pretty sure, in Houston there are just buses. Houston can be a very busy place with a lot of highways and fast-paced roads. Bicycling is not a big option unless he lives a few blocks from his job. The only thing that I think would work for him would be the public bus. It might take him changing buses 3 times to get to work. It all depends on how far he lives from the jobsite.

I live in Houston and it depends on where he will be staying and where his office will be.

Houston has public buses, taxis and yes light rail HOWEVER the rail is in the medical center only. So I would say public bus is his option. Look Metro up on the computer. Houston Metro is what it is called. You should be able to find the routs he will need to take.

Houston is an intimidating city to drive in. It is very spread out. Make sure he is staying close to the office.