Engineers design extreme wheelchairs
Austrian engineers have designed a new range of extreme wheelchairs by replacing wheels with tank treads.
The Ziesel developed for outdoor action can be used all year round on almost all surfaces - conquering snow, sand, stone, mud and grass - which would usually be totally inaccessible to normal wheelchairs.
Using high performance motors powered by lithium-ion batteries, the all-weather tracks allow the 210kg chair to glide over almost any land. Reaching speeds of up to 35km per hour, the chairs have become increasingly common across European ski slopes, toboggan runs, cross-country skiing tracks and hiking trails.
Specialists at design company Mattro said: "The Ziesel grants people hours of driving pleasure, giving them access to places they could never go before.
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