By Aditya Soni and Akash Sriram June 16 (Reuters) - Electric-vehicle startups from Nikola NKLA.O to Lordstown Motors RIDE.O were on Friday set to extend a searing rally in their shares that has put them on track for hefty weekly gains. The winning streak has come without any apparent news or catalyst for the companies, leading several analysts and traders to point to a potential squeeze in the highly shorted stocks. Rising interest rates and high inflation have limited their access to funding at a time when efforts to ramp up production are already thinning the companies' cash reserves.