Ticket deals on Hiawatha Service between Milwaukee and Chicago

Amtrak's 'Hiawatha Service' is offering deals on trains between Milwaukee and  Chicago.    You can get two round-trip tickets for $75 on Saturdays.   To get the discount, tickets must be purchased online using the promo code \"V 4-5-1\".  You can take your bicycle for an extra $5.  The Hiawatha train also has late-night services on Saturdays.  The last train leaves Milwaukee at 10:40 PM  and Chicago at 11:10 PM.