I wish I could put this up here. It would hold both bikes and then some!
http://www.amazon.com/King-Canopy-12-Feet-Garage-Enclosed/dp/B002S4FJB6/ref=sr_1_12?ie=UTF8&qid=1430769447&sr=8-12&keywords=portable+garage
http://www.amazon.com/King-Canopy-12-Feet-Garage-Enclosed/dp/B002S4FJB6/ref=sr_1_12?ie=UTF8&qid=1430769447&sr=8-12&keywords=portable+garage