In 2007 the first model with a National Parks livery was released, the theme carried forward on other models in that year to create a small running theme. The popularity of the models was such that Mattel, Inc. decided to bring back the theme in 2018 and then continued with it for many years after.
In 2019 the theme is still going strong and shows no signs of letting up.
The models with this theme now form an official collection in their own right
| Year | Model Name | <click to enlarge> |
| 2007 | MB699 : Off Road Rider | |
| 2007 | MB666 : Hummer H3 | |
| 2008 | MB526 : Hummer H2 SUV Concept |  |
| 2012 | MB686 : Tractor Plow |  |
| 2012 | MB817 : Ford F-550 Super Duty |  |
| 2012 | MB817 : Ford F-550 Super Duty |  |
| 2018 | MB728 : Mercedes-Benz Unimog U300 |  |
| 2018 | MB129 : Chevrolet Blazer 4×4 |  |
| 2018 | MB918 : Drill Digger |  |
| 2018 | MB909 : Rapids Rescue |  |
| 2018 | MB1003 : Freightliner Business Class M2-106 |  |
| 2019 | MB742 : Garbage Truck |  |
| 2019 | MB1048 : Hail Cat |  |