 1970: Douglas Huebler exhibits a series of photographs which were taken every two minutes whilst driving along a road for 24 minutes.
<fluency>  1970: Douglas Huebler exhibits a series of photographs which were taken every two minutes whilst driving along a road for 24 minutes.
 1970: Douglas Huebler exhibits a series of photographs which were taken every two minutes while driving along a road for 24 minutes.