Qatar is on the verge of investing in Porsche; but that won't solve all of the sports car manufacturer's problems: In addition to billions in fresh capital, the company also desperately needs a €1.75 billion credit line for its day-to-day operations.

June 7 could become a historic day for Germany's Porsche and Piech families. On that particular Sunday, the two families met in Salzburg, where Porsche CEO Wendelin Wiedeking and Chief Financial Officer Holger Harter presented a plan that could free the sports car manufacturer of its suffocating debts.

When Ernst Piëch, the grandson of Porsche founder Ferdinand Porsche, wanted to sell his portion of the company to an Arab investor in 1983, other family members pooled together and acquired his shares. Porsche faced bankruptcy in 1992 and Toyota offered to acquire the car-maker for 1.5 billion deutsche marks, but the families declined. This time, though, they've weakened their stance: According to a source close to them, a clear majority of Porsche and Piech family members have agreed to Qatar's acquisition of 25 percent of the company's common shares. Even Ferdinand Piech, who has opposed the deal, can't seem to hold it off any longer. He could've formed a blocking minority with his brother Hans Michel, one the other family members couldn't break. But Hans Michel - who traveled with Wolfgang Porsche to Doha to visit the Emir of Qatar, Sheik Hamad bin Khalifa Al-Thani - appears to be in support of the injection of sovereign wealth funds from Qatar.