Harley-Davidson Inc (NYSE:HOG) shares were higher as rumors swirled regarding a partnership with Tesla Inc (NASDAQ:TSLA).

Not much is known about the deal as no details have emerged so far, but it is believed the two automakers are working on something that could have a significant impact on the industry. An electric Model M motorcycle from Tesla has yet to make it past the early stages of development, so perhaps Harley-Davidson will offer the electric car maker some assistance on how to build a top-quality bike.

Here’s what Twitter had to say on the matter:

TSLA stock fell 3.1%, while HOG shares soared 2.9%.