Elon Musk, Jamie Dimon Warn of Economic Uncertainty Ahead as Consumer Spending Slows

Elon Musk, Jamie Dimon and American Express CEO recently shared cautious outlooks on economy and interest rates.

Their views carry weight given access to real-time consumer spending data.

Musk worried high interest rates making Teslas unaffordable for many buyers.

AmEx CEO expects more uncertainty and volatile markets in 2024.

Author argues investors should heed warnings from business heavyweights as sign of choppy times ahead.