I haven't seen this posted but I got this email from Chase:
Earn a total of 10% Cash Back on up to $2,500 in combined hotel and car rental purchases made through
Chase Ultimate Rewards®.
• Offer valid on purchases made March 1 – March 31, 2017, at 11:59 p.m.Eastern time.
• Applies to hotels and car rentals booked through
ChaseUltimateRewards. com.
• Choose from over 180,000 hotels worldwide, with prices comparable to popular travel booking sites.
• Shop our competitive rates from all your favorite car rental companies.