Rep. Gerry Connolly (D-Va) has been taking a variety of modes into work "as part of his efforts to highlight the transportation choices and challenges Northern Virginia commuters face on a daily basis." He's slugged, ridden VRE, taken the bus and carpooled.
Connolly also said he wants to ensure commuters have options and he will continue to support bike lanes, rail, bus, telecommuting and other strategies that will mitigate congestion on roads.
His district would make for a long bike ride, but he could try a bike/transit ride if he doesn't think he could make it. As long as he's highlighting transportation choices, why not bike?