[PRESSWIRE] HIAWATHA, Iowa, May 31, 2018 -- Crystal Group Inc., a leading designer/manufacturer of rugged computer and electronic hardware, brings its field-tested and customer-proven autonomous driving computers to two simultaneous exhibitions: TU-Automotive Detroit in Novi, Michigan from June 5 – 7 at the Suburban Collection Showplace, and at Autonomous Vehicle Technology World in Messe Stuttgart, Germany from June 5 – 7 at Messepiazza 1.