BlaBlaCar, the 14-year-old French tech unicorn which has become synonymous with carpooling, has to date raised a staggering €396.4 million ($448.5 million) from investors including Accel Partners and Index Ventures. While things are going well for the business, Frédéric Mazzella, co-founder of BlaBlaCar, told Growth Quarters the journey wasn’t always smooth sailing. According to Mazzella, it’s important for founders to nurture their offering even as the business evolves: “Making sure the product remains consistent is one of the hardest things.” [Read: We need to unmask the inner turmoil of founders — so here’s my story] For instance, if you offer…
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