Hasbro’s 2005 Micro Vehicles was a short-lived throwback to Micro Machines, packaging small vehicles and figures together (I believe these were Target exclusives). Altogether, there were 6 OT sets, 3 RotS sets, and 3 RotS transforming vehicle playsets.
The detail varied widely from set to set, with figures usually taller than MM and shorter than Action Fleet. Personally, I thought most vehicles were kinda rough, but there were a few standouts. The Droid Tri-Fighter and ARC-170 are nice additions. For figures, the RotS Obi-Wan, Anakin, and Battle Droid are close to their Action Fleet counterparts. Finally, the Tantive IV transforming playset has an unique Theta Shuttle, and the Invisible Hand playset has the only Grievous escape pod available (pictured below).
The best however, is the BARC speeder, which is close to AF figures and vehicles. See the BARC speeder custom page for more info.