GM announces hybrid SUV with lithium ion batteries

Rick Wagoner, GM Chairman and CEO, has said on November, 29:

"GM Announces Intention to Produce Plug-in Hybrid SUV
Saturn Vue Green Line Will Use Modified 2-mode Hybrid System, Lithium Ion Battery
LOS ANGELES – General Motors Corp. intends to produce a Saturn Vue Green Line plug-in hybrid that has the potential to achieve double the fuel efficiency of any current SUV, the automaker announced at the Greater Los Angeles Auto Show.
This hybrid SUV will use a modified version of GM’s 2-mode hybrid system and plug-in technology, a Lithium Ion battery pack when ready, highly efficient electronics and powerful electric motors to achieve significant increases in fuel economy.
“GM has begun work on a Saturn Vue plug-in hybrid production vehicle,” said Rick Wagoner, GM Chairman and CEO. “The technological hurdles are real, but we believe they are also surmountable. I can’t give you a production date for our plug-in hybrid today. But I can tell you that this is a top priority program for GM, given the huge potential it offers for fuel-economy improvement.”
A plug-in hybrid-electric vehicle differs from non-plug-in hybrid-electric vehicles by offering extended electric-only propulsion, additional battery capacity and the ability to be recharged from an external electrical outlet.
The Saturn Vue Green Line plug-in hybrid is expected to offer electric-only propulsion for more than 10 miles."

So, GM doesn't have the lithium ion battery technology yet. Which will be the supplier?