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- Elon Musk has been urged to lay out a vision for Tesla as senior staff leave amid layoffs.
- An analyst called the departure of one executive a "gut punch" to investor confidence.
- Musk announced that "more than 10%" of the workforce would be laid off.
Elon Musk must set out a vision for Tesla after investors were spooked by high-profile departures amid layoffs, an analyst says.