Sure, I'd be happy to explain this in a simpler way!

Imagine you have a friend named Rivian who started a new company making special cars that don't use gasoline, they run on electricity instead. These are called "electric vehicles" or EVs.

Now, another big car company named Volkswagen wanted to help Rivian because they also want to make more electric cars. So, they said they would give Rivian some money to work together and make even better electric cars.

At first, Volkswagen said they would give Rivian about $5 billion. But now, they've decided to give a little bit more - up to $5.8 billion! This is like if your friend agreed to buy you an ice cream for $10, but then changed their mind and said they'd give you $12 instead.

Rivian's shareholders (these are people who own part of Rivian) were happy about this because it's extra money that can help Rivian grow. So, the price of Rivian's shares went up by 13% in the time before the market officially opens for the day.

In simple terms, Volkswagen and Rivian are teaming up to make really cool electric cars, and Volkswagen is giving Rivian a bit more money than they originally planned, which makes Rivian's shareholders happy. Read from source...

Based on the provided text, here are some potential criticisms and improvements from a linguistic and journalistic standpoint:

1. **Inconsistencies**:
- The text mentions that Rivian shares closed down 4.2% at $10.58 "on Tuesday," but then says they were up over 13% "in the pre-market session on Wednesday." However, it's unclear whether this is a typo or if the author meant to refer to different trading sessions.
- The text mentions that Rivian shares are down by about 50% year-to-date, but it's not specified which date is being used as the reference point for the start of the year (e.g., January 1, 2023 vs. when the company first went public).

2. **Biases**:
- The use of the phrase "loss-making Rivian" could be perceived as biased, as it's not clear if this is still an accurate description given the latest financial information.
- The text uses the word "kickstarted" to describe Volkswagen's increased investment, which might imply a more positive interpretation than is objectively supported by the facts.

3. **Irrational arguments**:
- There are no obvious irrational arguments in this text.

4. **Emotional behavior**:
- The text does not exhibit any emotional language or bias that could be perceived as the author's emotional response to the topic.

**Revisions and improvements**:

- To maintain consistency, clarify which trading sessions are being referred to when mentioning Rivian shares' closing price on Tuesday and the pre-market session on Wednesday.
- Specify the date used for calculating the year-to-date performance of Rivian shares.
- Remove or replace potentially biased language like "loss-making Rivian" with more neutral phrasing (e.g., "Rivian, a company that has yet to report profits").
- Use more factual and less subjective language when describing events (e.g., instead of "kickstarted," perhaps use "began" or "initially announced").
- Include relevant facts and context, such as:
- The total market value of Rivian or Volkswagen at the time of the announcement.
- Any publicly available information about the financial performance of both companies before or after this new joint venture was announced.

Based on the content of the article, the sentiment is largely **positive** with a hint of **bullish**. Here's why:

1. **Positive**: The article reports that Rivian Automotive Inc.'s stock is up 13% in pre-market trading due to an increased investment from Volkswagen Group.

2. **Bullish**: This positive outcome suggests potential growth and confidence in Rivian's future, as a larger investor (Volkswagen) is showing increased commitment financially.

There are no significant bearish or negative sentiments expressed in the article. Although the stock had previously closed down 4.2%, this news has reversed that trend, indicating bullish optimism among investors.

Sentiment Score: +2 (Positive and Bullish)