McLaren will have an interim chassis fitted with a Honda power unit out at Silverstone Friday, although not for a proper test.
The so-called McLaren MP4-29H1/X1 will be out on track alongside two classic McLaren-Hondas. See the note below from McLaren’s Twitter feed:
Of course left unsaid in the tweet would be who is driving any of the three McLarens.
The driving lineup for 2015 is yet to be decided.