Mark Walker and MarkWalker.Info Travel Industry Investments

NÜ Car Rentals connects independent car rental companies around the world with international travelers.  These companies have united under the NÜ name to the marketing, technology and distribution contracts across which are not cost effective for these companies to access individually.  NÜ currently represents companies in 26 countries with over 100 locations and provides these companies visibility and connectivity to websites such as Expedia and travel agency systems such as Sabre.

Sightseeing City Tours San Antonio and Austin, TX

Truly, The Local Expert.
Gray Line offers sightseeing tours in more than 150 destinations on six continents and is widely recognized as the world's leader in sightseeing tours, ground transportation, charter services, airport transfers and convention services. From sightseeing tours and overnight packages to adventure trips and unique behind the scenes experiences - we offer complete destination experiences all around the world. We look forward to welcoming you aboard a Gray Line Sightseeing Tour on your next vacation.

Let’s GO!

Star Shuttle is one of Central and South Texas largest private transportation companies providing a wide range of charter vehicles to both private and public interests. Vehicles range from small vans to 55 passenger motor coaches. Across town or across the country. Move 10 people – or 10,000.

Texas Express is the exclusive Weekend Non-Stop service from the University of Texas at Austin campus to Dallas and Houston. Provided in conjunction with The University's Parking and Transportation Services, Texas Express encourages students to “leave the car at home” by providing a convenient and economical way to return home or visit friends on weekends and holidays.

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Abbey Walker Executive Cars & Limousines augments the Star Shuttle fleet by offering luxury chauffer services in vehicles ranging from executive sedans and limousines to our specialty event limousine coaches for parties of 4 to 44 persons.  Amenities include items such as flat screen tv’s, wireless internet, bar, perimeter seating, premium lighting and sound systems.

Easy Reservations is a full service online travel agency launched in 1998. Easy Reservations combines the best of both world’s for travelers by offering the technology, offerings and back office fulfillment of Expedia along with special negotiated rates, destination specific expertise, knowledge and discounts.

Reservation Affiliates, LLC provides technology services to the car rental industry with electronic connectivity to travel agency Global Distribution Systems, websites and direct to consumers.

Advantage Rent-A-Car was established by the Walkers and was sold in 2006. It is now a subsidiary of the Hertz Corporation and provides Hertz with a ‘discount’ brand to service major markets.

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