What Is a Tanker Truck? Why Are You Stuck Behind One While It Just Sprays Cars With Water?

"It's so the cars grow big and strong."

Photo by: Unsplash.com

Steve Ecker

By: Steve Ecker

Sep 12, 2025 at 5:00pm ET

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A woman went viral for questioning what the point of tanker trucks is.

In a TikTok that’s generated over 1.2 million views as of this writing, Hollace (@homo_walter) reveals a tanker truck spraying water onto cars as it drives by on a neighborhood street.

“The other day I got stuck behind this thing, does anybody know wtf it’s doing? Why is it watering cars?” she captions the video.

The short video showcases how the tanker truck is driving through the streets and watering the cars.

Parked cars getting blasted by water from the tanker truck left commenters cracking jokes.

“He's watering the cars so they can grow up big and strong and make more cars. Thus, continuing the circle of life,” one TikTok commenter said.

“Imagine your window rolled down and you're just enjoying an iced coffee,” another imagines.

“Cars naturally shrink over time due to dehydration. This prevents that,” a third jokes.

Hollace told Motor1, “Basically I was going to run errands and got stuck behind the truck, which wasn’t usual because the city I live in is always under construction. But when the truck started spewing water, it was just really funny to me so I took a video. I showed it to my mom and sister later that day and they also thought it was hilarious. But all three of us had no idea what it was doing or what the purpose of it was. So I posted it on tiktok because I thought somebody might have the answer but I never thought the video would reach so many people.”

What Is a Tanker Truck?

A tanker truck is designed to transport gas or liquid in bulk, Fleet Owner shares. The cargo tank is cylindrical and sits on a heavy-duty chassis equipped with pumps, valves, leak sensors, and reinforced fittings that prevent contamination, National Motor Freight Traffic Association (NMFTA) reports.

Tanker trucks are used to carry and transport the following materials:

Water: Bulk water deliveries for emergency sites, construction sites, and agricultural ventures. These trucks are used to maintain the quality of the water during transit.
Food and Beverages: Dairy farms use tanker trucks to move milk from farms to processing plants. Additionally, juice and syrup can be transported with tankers.
Fuel and Petroleum Products: Tankers can carry fuel for gasoline and diesel vehicles as well as aviation fuel.
Chemicals: Tanker trucks can withstand harsh or reactive substances of chemicals during transport as they have corrosion-resistant linings.

Tanker trucks can range in size. According to BigRentz, the standard water trucks can hold between 2,000 and 6,000 gallons of water. Additionally, these tankers can stretch out to be 50 feet long, NMFTA reports.

Why Are You Stuck Behind One While It Just Sprays Cars With Water?

Water tanker trucks are commonly used in construction areas, agriculture zones, and industrial areas. These tanker trucks are brought in to control dust, fire, irrigation, disaster relief, soil compaction, and clean equipment on streets.

What do you think?

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Comments

“It’s a Tanker Truck. They spray cars and roads on construction/industrial/farming areas to avoid dust pollution, which is very dangerous and can cause accidents by obscuring the driver's vision and also cause health problems if not managed. They keep dust from kicking up,” one TikTok commenter explained.

Dust is known to limit visibility and increase health and environmental risks. In the case of the TikTok, Hollace mentioned her neighborhood is under frequent construction.