Here are three things you must know at midday on Tuesday, Dec. 12:

1. -- Westfield Corp., the owner of the shopping center at One World Trade Center in New York, is being bought by French property investor Unibail-Rodamco for $15.7 billion.

TheStreet's Brian Sozzi wrote that the move is an interesting one as retailers find the going tough against online retailing giant Amazon.com Inc. (AMZN) .

But Sozzi reckoned there are ways for malls to compete in the digital age. Read here for more.

2. -- Tesla Inc.'s (TSLA)  electric semi truck has received pre-orders from more than a dozen companies even though the vehicle won't begin production until 2019. 

It currently costs $5,000 per truck for a reservation. The truck will cost between $150,000 and $180,000.

PepsiCo Inc. (PEP) is the latest company to reserve the trucks, signing on for 100 of them. Tesla shares rose 2% on Tuesday.

Read here for four other companies that are looking to reduce fuel costs and go green. 

3. -- Can't get enough of cryptocurrencies, right? Good, because here's more: Litecoin, the digital currency that has long stood in the shadow of more preeminent crypto assets such as bitcoin and ether, reached a fresh record price Tuesday, two days after bitcoin futures opened on Cboe.

After surging to a record high of $333.34 early Tuesday, litecoin traded at $328.40 by late morning. That's a 121% price rally from litecoin's closing price of $148.66 on Sunday, Dec. 10. The cryptocurrency has gained nearly 80% in the last 24 hours.

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