I have recharged the lead acid batteries of R5 and put it in my yard for another test run (until 17:00 UTC+2):

http://www.homofaciens.de/robospatium-controlstation-R5_en.htm

It runs with my latest creation R6:

http://www.homofaciens.de/robospatium-controlstation-R6_en.htm

More "double" or maybe "triple" runs will follow as son as R7 is up and running.