Here's the pattern: Mars rover wheels with various grouser molds. From left to right is the Spirit and Opportunity-type wheel, smaller Sojourner rover wheel, and the large Curiosity wheel. What next for the NASA Mars 2020 mission?
Nascar meets wheelchair in this polished tire rocker up for grabs on community-based classifieds site Krrb. The chair, named “El Rocker de Las Llantas Muertas" (The Rocker of Dead Tires), has been meticulously hand crafted by Brooklyn-based designer.