Toyota is giving adults a chance to relive their favourite childhood memories with a new concept based on the Hilux pick-up truck. Dubbed the Hilux Tonka Concept, the carmaker describes it as “a full-size dream toy for adults” that embodies the toughness and durability found in Toyota and toymaker, Tonka’s DNAs.

Developed and built by 150-strong team from Toyota Australia’s product planning and development division, the brightly coloured off-roader also celebrates the global anniversaries for both Toyota (80th) and Tonka (70th) this year.

Based on the range-topping Hilux SR5 sold in Australia, the concept is powered by a 2.8 litre turbodiesel engine with 174 hp and 420 Nm of torque. It also gets plenty of modifications to create the “go anywhere” look, beginning with an increase in ride height of 150 mm, which is combined with a high-riding axle, heavy-duty suspension and 35-inch diameter tyres.

Styling enhancements include a new front bar while the bonnet is fitted with a carbon-fibre skin, an aggressive “power bulge” and air scoops. To pierce through the darkness, the concept gets LED lighting in the front bar as well as the roof pod.

To ensure vital components remain protected, a 6 mm-thick alloy bash plate is installed, and there are tubular side rails for body and chassis protection. The list of changes continue in the back, where a new tailgate (wrapped in carbon-fibre) is now released with a strap instead of a handle. It is joined by an integrated spoiler and two air vents for better airflow.

Lower the tailgate, and in the flatbed, a removable tubular frame keeps all essential gear in place, including diesel fuel cans and storage boxes that contain recovery gear needed for extreme off-road driving. You’ll also find a fire extinguisher, axe, shovel and high-lift jack fitted to the back as well.

Unfortunately, the concept is not destined to make it to dealer showrooms, which is a bummer If you want to relive those memories of playing with Tonka toys in the sandpit as an adult.