Dear Rick I have found over the last few years the same problem but only occurs when I am approaching "off" time or before meds .have kicked in 100% Are you under Medicated? If I can I just try not to be behind the wheel at this time. I can no longer drive any distance , as the leg tremor as soon a s I stop driving would go nuts for a while until I rested. Unfortunately I suffer from exhaustion if drive too far where I have a shutter effect of an instant kind of "blackkout and return to "normalcy" within seconds . I get this in the evening after an active day its almost like a dyskinisia as my coffee is always ending uy down the front of me as I jerk into these seconds of where? Anyone else experiencing this peculiaritiy ? Margaret Clark 59/11 Sinemet Sinemet CR Elderpryl Mirapex