A11.8 stipule bien qu'il y a changement de Location :
"All Infantry advancing into that road Location from ground level of one or more of those adjacent building hexes qualify for a Streetfighting Ambush -1/+1 DRM in CC vs the vehicle (not cumulative with the normal -1/+1 CC DRM for Ambush) unless actual Ambush occurs even if the vehicle is accompanied by escorting Personnel. The unit(s) would be moved onto the vehicle(s) in the road hex to make their CC attack(s) and following any CC attack returned to the same Locations they came from with mines/FFE attacking normally when they return or at their option remain in the road Location.
Je rejoindrais donc la lecture de Philippe : dès lors qu'il y a changement de hex, il y a attaque - tant pour sortir que pour entrer.
Dans le cas d'un véhicule en Bypass, par contre, il n'y aurait pas d'attaque de mines (pas de changement de hex ou de Location).