There have been several clues asked about today but I already had them. The ones I'm stuck on must be so obvious that I'll kick myself.
5a What Madrid car driver produces if he's stopped. I? c?r?
23a Inspections certain to cover 5 yachts not 8 in Hamburg. s?r???s. 5d is invisible, 8d is phlegm
20dContainer transport group's resistant to change. i???t.