Mountain Bike
A mountain bike is a durable off-road bicycle designed for rugged trails with features like suspension, wide tires, and strong frames.
Fun Fact
In 2026, mountain bikes in the $1,000–$2,000 range are considered rational choices for progression and real trail riding, not compromises.
Price History
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Blimp
A blimp is a type of non-rigid or semi-rigid airship used for advertising, passenger rides, and aerial observation, with the Goodyear Blimp being the most iconic example.
Space Shuttle (per mission)
The Space Shuttle program conducted 135 missions from 1981 to 2011, with the total lifetime cost averaging $1.5 billion per mission when including all program overhead from development through retirement.
Tunnel Boring Machine
A Tunnel Boring Machine (TBM) is a massive heavy equipment machine used to excavate tunnels with a rotating cutting wheel, typically employed in large-scale infrastructure projects like subways and highways.
1955 Mercedes-Benz 300 SLR Uhlenhaut Coupe
The most expensive car ever sold, bringing $142 million at a private auction in 2022.