Hyperloop UPV
The Hyperloop UPV concept is a levitating rail-free pod design. Using magnetic repulsion and air cushioning for levitation is expensive and can produce unpredictable forces. The pod is equipped with a hybrid system of permanent magnets and electromagnet units, being able to control lift, so it can hover from the top of the tube. That way, the pod doesn't need so much electricity to be lifted by itself. Propulsion is obtained through expansion of the air with a nozzle, located at the rear of the pod, achieving speeds of up to 1000 km/h. The turbine recovers energy from the flow allowing a more efficient journey. This clean tube layout is said to cut costs in up to 30% of the whole Hyperloop project (about 180m USD) and the possibility to comfortably fit more passengers.
Hot Wheels
There are hundreds, perhaps even thousands, of web pages dedicated to Hot Wheels collecting. Collectors are seeking everything related to Hot Wheels, from only new castings to only Red Lines and everything in between. For the most part it is a relatively inexpensive hobby, when compared with coin collecting, stamp collecting or Barbie collecting, with mainline cars costing about $0.97-$1.08 (USD) at retail. The price has not changed much in almost 40 years, although in real terms the models have dropped significantly in price (a Hot Wheels car cost $0.98 in 1968 and costs $0.98 today, in spite of inflation). After the cars are no longer available at retail the cost can vary significantly. A common car may sell for less than retail, while some of the more difficult cars can sell for many hundred or even thousands of dollars. The highest price paid for a Hot Wheels car was close to $70,000 in 2000 for a pre-production version of a "Volkswagen Rear Loader Beach Bomb" (the asking price was $72,000). The Beach Bomb is a VW microbus with a pair of surfboards poking out the rear window. This design failed initial testing, proving to be top-heavy and not functional with the Power Booster track accessory. A widened version with the surfboards mounted in side slots was designed and released for the 1969 model year, making the "rear loader" version a rarity and very sought-after piece. As of 2018, there are about 50 "rear loaders" known to exist.